3 years ago

Help plzzzzzzzzzzzzzz

Mathematics

1 answer:

Viefleur [7K]3 years ago

6 0

Answer:

∠E

Step-by-step explanation:

∠E is between PE and EN

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Suzanne can read 1 page in 3 minutes. how many pages can she read in 5 hours?

pychu [463]

If Suzanne can read 1 page in 3 minutes, that means that in ONE hour, she can read 20 pages.
1 page per 3 minute
60minutes : 3 = 20 pages
Now, multiply 20 pages by 5 hours.
20 x 5 = 100.

I hope it helps! (She's pretty slow at reading)

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3 years ago

Of 201 adults selected randomly from one town, 179 have credit cards. Find a 90% confidence interval for the true proportion of

tino4ka555 [31]

Answer:

I think this is a probability problem.

Step-by-step explanation:

201*0.9 the divide by 179??

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3 years ago

If z=15, what would the expression z2 – 2z + 15 be equal to?

svet-max [94.6K]

Answer:

Step-by-step explanation:

z2 - 2z + 15

(15)2 - 2(15) + 15

30 - 30 + 15

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3 years ago

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A random sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard

azamat

Answer:

Option C

Step-by-step explanation:

Given that for a random sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard deviation of 320 square feet.

X, the sizes of houses is Normal

Hence sample mean will be normal with

Mean = 1880

and std dev = $\frac{320}{\sqrt{20} } \\=71.5542$

For 90% confidence interval critical value for t with degree of freedom 19 is

1.328

Confidence interval upper bound

= mean + margin of error

= $1880+1.328*71.55\\=1975$

Option C is right

3 0

3 years ago

Plz help I’ll give brainliest

Nostrana [21]

Answer:

2) 4/5

3) 3

Step-by-step explanation:

2) 4/8-3=4/5

3)5x-4=3x+2

2x=6

x=3

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3 years ago

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